| 1 | within Modelica.Blocks; |
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| 2 | package Nonlinear |
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| 3 | "Library of discontinuous or non-differentiable algebraic control blocks" |
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| 4 | import Modelica.Blocks.Interfaces; |
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| 5 | extends Modelica.Icons.Library; |
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| 6 | |
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| 7 | annotation(preferedView="info", |
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| 8 | Coordsys( |
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| 9 | extent=[0, 0; 207, 132], |
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| 10 | grid=[1, 1], |
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| 11 | component=[20, 20]), |
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| 12 | Window( |
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| 13 | x=0.05, |
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| 14 | y=0.1, |
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| 15 | width=0.21, |
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| 16 | height=0.23, |
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| 17 | library=1, |
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| 18 | autolayout=1), |
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| 19 | Documentation(info=" |
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| 20 | <HTML> |
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| 21 | <p> |
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| 22 | This package contains <b>discontinuous</b> and |
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| 23 | <b>non-differentiable, algebraic</b> input/output blocks. |
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| 24 | </p> |
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| 25 | </HTML> |
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| 26 | ", revisions="<html> |
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| 27 | <ul> |
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| 28 | <li><i>October 21, 2002</i> |
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| 29 | by <a href=\"http://www.robotic.dlr.de/Christian.Schweiger/\">Christian Schweiger</a>:<br> |
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| 30 | New block VariableLimiter added. |
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| 31 | <li><i>August 22, 1999</i> |
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| 32 | by <a href=\"http://www.robotic.dlr.de/Martin.Otter/\">Martin Otter</a>:<br> |
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| 33 | Realized, based on an existing Dymola library |
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| 34 | of Dieter Moormann and Hilding Elmqvist. |
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| 35 | </li> |
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| 36 | </ul> |
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| 37 | </html> |
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| 38 | ")); |
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| 39 | block Limiter "Limit the range of a signal" |
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| 40 | parameter Real uMax=1 "Upper limits of input signals"; |
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| 41 | parameter Real uMin= -uMax "Lower limits of input signals"; |
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| 42 | parameter Boolean limitsAtInit = true |
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| 43 | "= false, if limits are ignored during initializiation (i.e., y=u)"; |
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| 44 | extends Interfaces.SISO; |
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| 45 | |
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| 46 | annotation ( |
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| 47 | Coordsys( |
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| 48 | extent=[-100, -100; 100, 100], |
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| 49 | grid=[2, 2], |
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| 50 | component=[20, 20]), |
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| 51 | Window( |
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| 52 | x=0.22, |
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| 53 | y=0.06, |
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| 54 | width=0.43, |
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| 55 | height=0.51), |
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| 56 | Documentation(info=" |
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| 57 | <HTML> |
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| 58 | <p> |
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| 59 | The Limiter block passes its input signal as output signal |
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| 60 | as long as the input is within the specified upper and lower |
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| 61 | limits. If this is not the case, the corresponding limits are passed |
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| 62 | as output. |
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| 63 | </p> |
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| 64 | </HTML> |
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| 65 | "), Icon( |
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| 66 | Line(points=[0, -90; 0, 68], style(color=8)), |
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| 67 | Polygon(points=[0, 90; -8, 68; 8, 68; 0, 90], style(color=8, |
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| 68 | fillColor=8)), |
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| 69 | Line(points=[-90, 0; 68, 0], style(color=8)), |
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| 70 | Polygon(points=[90, 0; 68, -8; 68, 8; 90, 0], style(color=8, |
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| 71 | fillColor=8)), |
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| 72 | Line(points=[-80, -70; -50, -70; 50, 70; 80, 70], style(color=0)), |
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| 73 | Text( |
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| 74 | extent=[-150, -150; 150, -110], |
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| 75 | string="uMax=%uMax", |
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| 76 | style(color=0)), |
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| 77 | Text(extent=[-150, 150; 150, 110], string="%name")), |
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| 78 | Diagram( |
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| 79 | Line(points=[0, -60; 0, 50], style(color=8)), |
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| 80 | Polygon(points=[0, 60; -5, 50; 5, 50; 0, 60], style(color=8, |
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| 81 | fillColor=8)), |
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| 82 | Line(points=[-60, 0; 50, 0], style(color=8)), |
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| 83 | Polygon(points=[60, 0; 50, -5; 50, 5; 60, 0], style(color=8, |
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| 84 | fillColor=8)), |
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| 85 | Line(points=[-50, -40; -30, -40; 30, 40; 50, 40], style(color=0)), |
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| 86 | Text( |
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| 87 | extent=[46, -6; 68, -18], |
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| 88 | string="u", |
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| 89 | style(color=10)), |
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| 90 | Text( |
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| 91 | extent=[-30, 70; -5, 50], |
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| 92 | string="y", |
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| 93 | style(color=10)), |
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| 94 | Text( |
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| 95 | extent=[-58, -54; -28, -42], |
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| 96 | string="uMin", |
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| 97 | style(color=10)), |
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| 98 | Text( |
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| 99 | extent=[26, 40; 66, 56], |
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| 100 | string="uMax", |
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| 101 | style(color=10)))); |
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| 102 | equation |
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| 103 | assert(uMax >= uMin, "Limiter: Limits must be consistent. However, uMax (=" + String(uMax) + |
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| 104 | ") < uMin (=" + String(uMin) + ")"); |
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| 105 | if initial() and not limitsAtInit then |
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| 106 | y = u; |
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| 107 | assert(u >= uMin - 0.01*abs(uMin) and |
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| 108 | u <= uMax + 0.01*abs(uMax), |
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| 109 | "Limiter: During initialization the limits have been ignored.\n"+ |
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| 110 | "However, the result is that the input u is not within the required limits:\n"+ |
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| 111 | " u = " + String(u) + ", uMin = " + String(uMin) + ", uMax = " + String(uMax)); |
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| 112 | else |
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| 113 | y = smooth(0,if u > uMax then uMax else if u < uMin then uMin else u); |
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| 114 | end if; |
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| 115 | end Limiter; |
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| 116 | |
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| 117 | block VariableLimiter "Limit the range of a signal with variable limits" |
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| 118 | extends Interfaces.SISO; |
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| 119 | parameter Boolean limitsAtInit = true |
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| 120 | "= false, if limits are ignored during initializiation (i.e., y=u)"; |
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| 121 | Interfaces.RealInput limit1 |
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| 122 | "Connector of Real input signal used as maximum of input u" |
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| 123 | annotation (extent=[-140, 60; -100, 100]); |
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| 124 | Interfaces.RealInput limit2 |
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| 125 | "Connector of Real input signal used as minimum of input u" |
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| 126 | annotation (extent=[-140, -100; -100, - |
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| 127 | 60]); |
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| 128 | protected |
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| 129 | Real uMax; |
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| 130 | Real uMin; |
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| 131 | |
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| 132 | annotation ( |
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| 133 | Documentation(info="<html> |
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| 134 | <p> |
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| 135 | The Limiter block passes its input signal as output signal |
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| 136 | as long as the input is within the upper and lower |
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| 137 | limits specified by the two additional inputs limit1 and |
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| 138 | limit2. If this is not the case, the corresponding limit |
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| 139 | is passed as output. |
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| 140 | </p> |
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| 141 | </HTML> |
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| 142 | "), Icon( |
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| 143 | Line(points=[0, -90; 0, 68], style(color=8)), |
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| 144 | Line(points=[-90, 0; 68, 0], style(color=8)), |
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| 145 | Polygon(points=[90, 0; 68, -8; 68, 8; 90, 0], style(color=8, fillColor= |
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| 146 | 8)), |
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| 147 | Line(points=[-80, -70; -50, -70; 50, 70; 80, 70], style(color=0)), |
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| 148 | Text(extent=[-150, 150; 150, 110], string="%name"), |
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| 149 | Line(points=[-100, 80; 66, 80; 66, 70], style(fillPattern=1)), |
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| 150 | Line(points=[-100, -80; -64, -80; -64, -70], style(fillPattern=1)), |
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| 151 | Polygon(points=[-64, -70; -66, -74; -62, -74; -64, -70], style( |
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| 152 | fillPattern=1)), |
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| 153 | Polygon(points=[66, 70; 64, 74; 68, 74; 66, 70], style(fillPattern=1)), |
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| 154 | Polygon(points=[0, 90; -8, 68; 8, 68; 0, 90], style(color=8, fillColor= |
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| 155 | 8))), |
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| 156 | Diagram( |
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| 157 | Line(points=[0, -60; 0, 50], style(color=8)), |
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| 158 | Polygon(points=[0, 60; -5, 50; 5, 50; 0, 60], style(color=8, fillColor= |
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| 159 | 8)), |
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| 160 | Line(points=[-60, 0; 50, 0], style(color=8)), |
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| 161 | Polygon(points=[60, 0; 50, -5; 50, 5; 60, 0], style(color=8, fillColor= |
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| 162 | 8)), |
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| 163 | Line(points=[-50, -40; -30, -40; 30, 40; 50, 40], style(color=0)), |
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| 164 | Text( |
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| 165 | extent=[46, -6; 68, -18], |
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| 166 | string="inPort", |
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| 167 | style(color=10)), |
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| 168 | Text( |
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| 169 | extent=[-30, 70; -5, 50], |
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| 170 | string="outPort", |
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| 171 | style(color=10)), |
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| 172 | Text( |
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| 173 | extent=[-66, -40; -26, -20], |
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| 174 | string="uMin", |
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| 175 | style(color=10)), |
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| 176 | Text( |
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| 177 | extent=[30, 20; 70, 40], |
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| 178 | string="uMax", |
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| 179 | style(color=10)), |
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| 180 | Line(points=[-100, 80; 40, 80; 40, 40]), |
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| 181 | Line(points=[-100, -80; -40, -80; -40, -40]), |
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| 182 | Polygon(points=[40, 40; 35, 50; 45, 50; 40, 40], style(fillPattern=1)), |
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| 183 | Polygon(points=[-40, -40; -45, -50; -35, -50; -40, -40], style( |
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| 184 | fillPattern=1)))); |
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| 185 | equation |
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| 186 | uMax = max(limit1, limit2); |
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| 187 | uMin = min(limit1, limit2); |
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| 188 | |
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| 189 | if initial() and not limitsAtInit then |
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| 190 | y = u; |
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| 191 | assert(u >= uMin - 0.01*abs(uMin) and |
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| 192 | u <= uMax + 0.01*abs(uMax), |
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| 193 | "VariableLimiter: During initialization the limits have been ignored.\n"+ |
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| 194 | "However, the result is that the input u is not within the required limits:\n"+ |
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| 195 | " u = " + String(u) + ", uMin = " + String(uMin) + ", uMax = " + String(uMax)); |
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| 196 | else |
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| 197 | y = smooth(0,if u > uMax then uMax else if u < uMin then uMin else u); |
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| 198 | end if; |
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| 199 | end VariableLimiter; |
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| 200 | |
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| 201 | block DeadZone "Provide a region of zero output" |
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| 202 | parameter Real uMax=1 "Upper limits of dead zones"; |
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| 203 | parameter Real uMin=-uMax "Lower limits of dead zones"; |
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| 204 | parameter Boolean deadZoneAtInit = true |
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| 205 | "= false, if dead zone is ignored during initializiation (i.e., y=u)"; |
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| 206 | extends Interfaces.SISO; |
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| 207 | |
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| 208 | annotation ( |
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| 209 | Coordsys( |
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| 210 | extent=[-100, -100; 100, 100], |
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| 211 | grid=[1, 1], |
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| 212 | component=[20, 20]), |
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| 213 | Window( |
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| 214 | x=0.39, |
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| 215 | y=0.18, |
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| 216 | width=0.56, |
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| 217 | height=0.6), |
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| 218 | Documentation(info=" |
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| 219 | <HTML> |
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| 220 | <p> |
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| 221 | The DeadZone block defines a region of zero output. |
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| 222 | </p> |
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| 223 | <p> |
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| 224 | If the input is within uMin ... uMax, the output |
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| 225 | is zero. Outside of this zone, the output is a linear |
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| 226 | function of the input with a slope of 1. |
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| 227 | </p> |
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| 228 | </HTML> |
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| 229 | "), Icon( |
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| 230 | Line(points=[0, -90; 0, 68], style(color=8)), |
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| 231 | Polygon(points=[0, 90; -8, 68; 8, 68; 0, 90], style(color=8, |
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| 232 | fillColor=8)), |
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| 233 | Line(points=[-90, 0; 68, 0], style(color=8)), |
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| 234 | Polygon(points=[90, 0; 68, -8; 68, 8; 90, 0], style(color=8, |
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| 235 | fillColor=8)), |
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| 236 | Line(points=[-80, -60; -20, 0; 20, 0; 80, 60], style(color=0)), |
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| 237 | Text( |
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| 238 | extent=[-150, -150; 150, -110], |
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| 239 | string="uMax=%uMax", |
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| 240 | style(color=9)), |
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| 241 | Text(extent=[-150, 150; 150, 110], string="%name")), |
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| 242 | Diagram( |
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| 243 | Line(points=[0, -60; 0, 50], style(color=8)), |
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| 244 | Polygon(points=[0, 60; -5, 50; 5, 50; 0, 60], style(color=8, |
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| 245 | fillColor=8)), |
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| 246 | Line(points=[-76, 0; 74, 0], style(color=8)), |
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| 247 | Polygon(points=[84, 0; 74, -5; 74, 5; 84, 0], style(color=8, |
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| 248 | fillColor=8)), |
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| 249 | Line(points=[-81, -40; -38, 0; 40, 0; 80, 40], style(color=0)), |
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| 250 | Text( |
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| 251 | extent=[62, -7; 88, -25], |
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| 252 | string="u", |
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| 253 | style(color=10)), |
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| 254 | Text( |
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| 255 | extent=[-36, 72; -5, 50], |
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| 256 | string="y", |
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| 257 | style(color=10)), |
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| 258 | Text( |
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| 259 | extent=[-51, 1; -28, 19], |
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| 260 | string="uMin", |
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| 261 | style(color=10)), |
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| 262 | Text( |
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| 263 | extent=[27, 21; 52, 5], |
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| 264 | string="uMax", |
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| 265 | style(color=10)))); |
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| 266 | equation |
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| 267 | assert(uMax >= uMin, "DeadZone: Limits must be consistent. However, uMax (=" + String(uMax) + |
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| 268 | ") < uMin (=" + String(uMin) + ")"); |
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| 269 | |
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| 270 | if initial() and not deadZoneAtInit then |
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| 271 | y = u; |
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| 272 | else |
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| 273 | y = smooth(0,if u > uMax then u - uMax else if u < uMin then u - uMin else 0); |
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| 274 | end if; |
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| 275 | end DeadZone; |
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| 276 | |
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| 277 | block FixedDelay "Delay block with fixed DelayTime" |
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| 278 | extends Modelica.Blocks.Interfaces.SISO; |
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| 279 | parameter SI.Time delayTime=1 |
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| 280 | "Delay time of output with respect to input signal"; |
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| 281 | |
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| 282 | annotation ( |
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| 283 | Coordsys( |
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| 284 | extent=[-100, -100; 100, 100], |
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| 285 | grid=[2, 2], |
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| 286 | component=[20, 20]), |
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| 287 | Window( |
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| 288 | x=0.27, |
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| 289 | y=0.09, |
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| 290 | width=0.65, |
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| 291 | height=0.78), |
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| 292 | Documentation(info="<html> |
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| 293 | <p> |
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| 294 | The Input signal is delayed by a given time instant, or more precisely: |
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| 295 | </p> |
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| 296 | <pre> |
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| 297 | y = u(time - delayTime) for time > time.start + delayTime |
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| 298 | = u(time.start) for time ≤ time.start + delayTime |
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| 299 | </pre> |
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| 300 | </html> |
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| 301 | "), Icon( |
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| 302 | Text( |
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| 303 | extent=[8, -102; 8, -142], |
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| 304 | string="delayTime=%delayTime", |
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| 305 | style(color=0)), |
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| 306 | Line(points=[-92, 0; -80.7, 34.2; -73.5, 53.1; -67.1, 66.4; -61.4, 74.6; |
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| 307 | -55.8, 79.1; -50.2, 79.8; -44.6, 76.6; -38.9, 69.7; -33.3, 59.4; |
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| 308 | -26.9, 44.1; -18.83, 21.2; -1.9, -30.8; 5.3, -50.2; 11.7, -64.2; |
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| 309 | 17.3, -73.1; 23, -78.4; 28.6, -80; 34.2, -77.6; 39.9, -71.5; |
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| 310 | 45.5, -61.9; 51.9, -47.2; 60, -24.8; 68, 0], style(color=73)), |
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| 311 | Line(points=[-62, 0; -50.7, 34.2; -43.5, 53.1; -37.1, 66.4; -31.4, 74.6; |
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| 312 | -25.8, 79.1; -20.2, 79.8; -14.6, 76.6; -8.9, 69.7; -3.3, 59.4; |
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| 313 | 3.1, 44.1; 11.17, 21.2; 28.1, -30.8; 35.3, -50.2; 41.7, -64.2; |
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| 314 | 47.3, -73.1; 53, -78.4; 58.6, -80; 64.2, -77.6; 69.9, -71.5; 75.5, |
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| 315 | -61.9; 81.9, -47.2; 90, -24.8; 98, 0], style(color=9))), |
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| 316 | Diagram( |
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| 317 | Line(points=[-80, 80; -88, 80], style(color=8)), |
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| 318 | Line(points=[-80, -80; -88, -80], style(color=8)), |
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| 319 | Line(points=[-80, -88; -80, 86], style(color=8)), |
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| 320 | Text( |
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| 321 | extent=[-75, 98; -46, 78], |
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| 322 | string="outPort", |
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| 323 | style(color=73)), |
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| 324 | Polygon(points=[-80, 96; -86, 80; -74, 80; -80, 96], style(color=8, |
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| 325 | fillColor=8)), |
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| 326 | Line(points=[-100, 0; 84, 0], style(color=8)), |
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| 327 | Polygon(points=[100, 0; 84, 6; 84, -6; 100, 0], style(color=8, |
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| 328 | fillColor=8)), |
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| 329 | Line(points=[-80, 0; -68.7, 34.2; -61.5, 53.1; -55.1, 66.4; -49.4, 74.6; |
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| 330 | -43.8, 79.1; -38.2, 79.8; -32.6, 76.6; -26.9, 69.7; -21.3, 59.4; |
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| 331 | -14.9, 44.1; -6.83, 21.2; 10.1, -30.8; 17.3, -50.2; 23.7, -64.2; |
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| 332 | 29.3, -73.1; 35, -78.4; 40.6, -80; 46.2, -77.6; 51.9, -71.5; |
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| 333 | 57.5, -61.9; 63.9, -47.2; 72, -24.8; 80, 0], style(color=73)), |
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| 334 | Text( |
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| 335 | extent=[-24, 98; -2, 78], |
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| 336 | string="inPort", |
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| 337 | style(color=0)), |
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| 338 | Line(points=[-64, 0; -52.7, 34.2; -45.5, 53.1; -39.1, 66.4; -33.4, 74.6; |
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| 339 | -27.8, 79.1; -22.2, 79.8; -16.6, 76.6; -10.9, 69.7; -5.3, 59.4; |
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| 340 | 1.1, 44.1; 9.17, 21.2; 26.1, -30.8; 33.3, -50.2; 39.7, -64.2; |
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| 341 | 45.3, -73.1; 51, -78.4; 56.6, -80; 62.2, -77.6; 67.9, -71.5; 73.5, |
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| 342 | -61.9; 79.9, -47.2; 88, -24.8; 96, 0], style(color=0)), |
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| 343 | Text( |
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| 344 | extent=[67, 22; 96, 6], |
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| 345 | string="time", |
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| 346 | style(color=9)), |
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| 347 | Line(points=[-64, -30; -64, 0], style(color=8)), |
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| 348 | Text(extent=[-58, -42; -58, -32], string="delayTime"), |
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| 349 | Line(points=[-94, -26; -80, -26], style(color=8)), |
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| 350 | Line(points=[-64, -26; -50, -26], style(color=8)), |
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| 351 | Polygon(points=[-80, -26; -88, -24; -88, -28; -80, -26], style(color=8, |
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| 352 | fillColor=8)), |
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| 353 | Polygon(points=[-56, -24; -64, -26; -56, -28; -56, -24], style(color=8, |
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| 354 | fillColor=8)))); |
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| 355 | equation |
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| 356 | y = delay(u, delayTime); |
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| 357 | end FixedDelay; |
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| 358 | |
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| 359 | block PadeDelay "Pade approximation of delay block with fixed DelayTime " |
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| 360 | extends Modelica.Blocks.Interfaces.SISO; |
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| 361 | parameter SI.Time delayTime=1 |
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| 362 | "Delay time of output with respect to input signal"; |
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| 363 | parameter Integer n(min=1) = 1 "Order of pade approximation"; |
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| 364 | parameter Integer m( |
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| 365 | min=1, |
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| 366 | max=n) = n "Order of numerator"; |
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| 367 | |
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| 368 | protected |
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| 369 | Real x1dot "Derivative of first state of TransferFcn"; |
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| 370 | Real xn "Highest order state of TransferFcn"; |
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| 371 | Real a[n + 1]; |
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| 372 | Real b[m + 1]; |
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| 373 | |
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| 374 | public |
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| 375 | final output Real x[n] |
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| 376 | "State of transfer function from controller canonical form"; |
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| 377 | annotation ( |
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| 378 | Coordsys( |
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| 379 | extent=[-100, -100; 100, 100], |
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| 380 | grid=[2, 2], |
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| 381 | component=[20, 20]), |
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| 382 | Window( |
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| 383 | x=0.27, |
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| 384 | y=0.09, |
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| 385 | width=0.65, |
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| 386 | height=0.78), |
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| 387 | Documentation(info="<html> |
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| 388 | <p> |
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| 389 | The Input signal is delayed by a given time instant, or more precisely: |
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| 390 | </p> |
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| 391 | <pre> |
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| 392 | y = u(time - delayTime) for time > time.start + delayTime |
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| 393 | = u(time.start) for time ≤ time.start + delayTime |
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| 394 | </pre> |
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| 395 | <p> |
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| 396 | The delay is approximated by a Pade approximation, i.e., by |
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| 397 | a transfer function |
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| 398 | </p> |
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| 399 | <pre> |
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| 400 | b[1]*s^m + b[2]*s^[m-1] + ... + b[m+1] |
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| 401 | y(s) = --------------------------------------------- * u(s) |
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| 402 | a[1]*s^n + a[2]*s^[n-1] + ... + a[n+1] |
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| 403 | </pre> |
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| 404 | <p> |
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| 405 | where the coefficients b[:] and a[:] are calculated such that the |
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| 406 | coefficients of the Taylor expansion of the delay exp(-T*s) around s=0 |
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| 407 | are identical upto order n+m. |
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| 408 | </p> |
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| 409 | <p> |
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| 410 | The main advantage of this approach is that the delay is |
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| 411 | approximated by a linear differential equation system, which |
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| 412 | is continuous and continuously differentiable. For example, it |
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| 413 | is uncritical to linearize a system containing a Pade-approximated |
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| 414 | delay. |
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| 415 | </p> |
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| 416 | <p> |
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| 417 | The standard text book version uses order \"m=n\", which is |
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| 418 | also the default setting of this block. The setting |
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| 419 | \"m=n-1\" may yield a better approximation in certain cases. |
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| 420 | <p> |
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| 421 | <p> |
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| 422 | Literature:<br> |
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| 423 | Otto Foellinger: Regelungstechnik, 8. Auflage, |
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| 424 | chapter 11.9, page 412-414, Huethig Verlag Heidelberg, 1994 |
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| 425 | </p> |
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| 426 | </html> |
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| 427 | "), Icon( |
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| 428 | Text( |
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| 429 | extent=[8, -102; 8, -142], |
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| 430 | string="delayTime=%delayTime", |
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| 431 | style(color=0)), |
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| 432 | Line(points=[-94, 0; -82.7, 34.2; -75.5, 53.1; -69.1, 66.4; -63.4, 74.6; |
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| 433 | -57.8, 79.1; -52.2, 79.8; -46.6, 76.6; -40.9, 69.7; -35.3, 59.4; |
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| 434 | -28.9, 44.1; -20.83, 21.2; -3.9, -30.8; 3.3, -50.2; 9.7, -64.2; |
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| 435 | 15.3, -73.1; 21, -78.4; 26.6, -80; 32.2, -77.6; 37.9, -71.5; |
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| 436 | 43.5, -61.9; 49.9, -47.2; 58, -24.8; 66, 0], style(color=73)), |
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| 437 | Line(points=[-72, 0; -60.7, 34.2; -53.5, 53.1; -47.1, 66.4; -41.4, 74.6; |
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| 438 | -35.8, 79.1; -30.2, 79.8; -24.6, 76.6; -18.9, 69.7; -13.3, 59.4; |
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| 439 | -6.9, 44.1; 1.17, 21.2; 18.1, -30.8; 25.3, -50.2; 31.7, -64.2; |
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| 440 | 37.3, -73.1; 43, -78.4; 48.6, -80; 54.2, -77.6; 59.9, -71.5; 65.5, |
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| 441 | -61.9; 71.9, -47.2; 80, -24.8; 88, 0], style(color=9)), |
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| 442 | Text( |
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| 443 | extent=[-10, 100; 100, 38], |
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| 444 | string="m=%m", |
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| 445 | style(color=9)), |
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| 446 | Text( |
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| 447 | extent=[-98, -34; 6, -96], |
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| 448 | string="n=%n", |
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| 449 | style(color=9))), |
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| 450 | Diagram( |
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| 451 | Line(points=[-80, 80; -88, 80], style(color=8)), |
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| 452 | Line(points=[-80, -80; -88, -80], style(color=8)), |
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| 453 | Line(points=[-80, -88; -80, 86], style(color=8)), |
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| 454 | Text( |
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| 455 | extent=[-75, 98; -46, 78], |
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| 456 | string="outPort", |
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| 457 | style(color=73)), |
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| 458 | Polygon(points=[-80, 96; -86, 80; -74, 80; -80, 96], style(color=8, |
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| 459 | fillColor=8)), |
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| 460 | Line(points=[-100, 0; 84, 0], style(color=8)), |
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| 461 | Polygon(points=[100, 0; 84, 6; 84, -6; 100, 0], style(color=8, |
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| 462 | fillColor |
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